Obsolete — sourcing reality
What the ratings mean for fit
The 15 ns write cycle time matches the read access time. Operating temperature is 0°C to 70°C.
Cypress CY7C1399B-15VXC 256Kbit SRAM, 15 ns access time
MPNCY7C1399B-15VXC
Obsolete
Cypress CY7C1399B-15VXC, 256Kbit (32K x 8) asynchronous parallel SRAM, 15 ns access time, 3.0–3.6V supply, 28-BSOJ (7.62 mm body width), commercial 0°C–70°C, tube, obsolete.
$1.0633Ref. price · indicative, final on quote
StockContact for availability
MOQ1 pcs
- 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
- Date & lot codes on quoteStated per line before you commit; label photos on request.
- MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications
| Parameter | Value |
|---|---|
| Memory type | Volatile |
| Mounting type | Surface Mount |
| Voltage | 3V ~ 3.6V |
| Memory interface | Parallel |
| Operating temperature | 0°C ~ 70°C (TA) |
| Package | Tube |
| Technology | SRAM - Asynchronous |
| Access time | 15 ns |
| Memory size | 256Kbit |
| Memory format | SRAM |
| Case | 28-BSOJ (0.300\", 7.62mm Width) |
| Memory organization | 32K x 8 |
| Write cycle time - word, page | 15ns |
Product details
Frequently asked questions
Is CY7C1399B-15VXC obsolete?
Yes, CY7C1399B-15VXC is officially obsolete per the manufacturer. No further production is planned; supply is limited to existing channel inventory.
What is the replacement for CY7C1399B-15VXC?
There is no official pin-compatible replacement listed by Cypress for this exact density and speed grade. For a functional equivalent, look for a 32K x 8 asynchronous SRAM in a 28-SOJ package with 15 ns access time and 3.3 V supply — verify the footprint and timing before substituting.
What are the specifications of CY7C1399B-15VXC?
256Kbit (32K x 8) asynchronous parallel SRAM, 15 ns access time, 3.0–3.6 V supply, 28-BSOJ (7.62 mm body width) package, 0°C to 70°C operating temperature, parallel interface.
What package is CY7C1399B-15VXC in?
28-BSOJ (0.300", 7.62 mm width) surface-mount package, also referred to as 28-SOJ.